/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

parser grammar LogQLParser;

options { tokenVocab = LogQLLexer; }

root: streamSelector EOF | streamSelector lineFilterList EOF;

streamSelector:   L_BRACE labelList? R_BRACE;

labelName:        NAME_STRING;
labelValue:       VALUE_STRING;
label:            labelName EQ labelValue;
labelList:        label (COMMA label)*;

operator:         CONTAINS | NOT_CONTAINS;
filterValue:      VALUE_STRING;
lineFilter:       operator filterValue;
lineFilterList:   (lineFilter)*;